/**
 * Creates a loading manager instance that interacts with the singleton iframe.
 * @returns An object with show, hide, and isLoading properties.
 */
export declare function createLoading(): {
    show: (options?: {
        duration?: number;
    }) => Promise<void>;
    hide: () => void;
    readonly isLoading: boolean;
};
export declare const loadingManager: {
    show: (options?: {
        duration?: number;
    }) => Promise<void>;
    hide: () => void;
    readonly isLoading: boolean;
};